diff --git a/src/releases/seamonkey2.1/index.en.html b/src/releases/seamonkey2.1/index.en.html
index c4b71d5eb9447efbd7a5a6430f093e7ef0d3477c_c3JjL3JlbGVhc2VzL3NlYW1vbmtleTIuMS9pbmRleC5lbi5odG1s..60da5494d80c9ba0d04cf22f20851341822975eb_c3JjL3JlbGVhc2VzL3NlYW1vbmtleTIuMS9pbmRleC5lbi5odG1s 100755
--- a/src/releases/seamonkey2.1/index.en.html
+++ b/src/releases/seamonkey2.1/index.en.html
@@ -219,6 +219,9 @@
     and then install the file {f13b157f-b174-47e7-a34d-4815ddfdfeb8}.xpi from the
     distribution/extensions directory of your SeaMonkey 2.1 installation (either using
     drag&amp;drop to a SeaMonkey window or using the Add-ons Manager).</li>
+  <li>After installing Firebug 1.7 and restarting the application, the Navigation Toolbar
+    may be broken (<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=658444">bug
+    658444</a>).</li>
   <li>Mac:
     <ul>
       <li>When hardware acceleration is off, background colors in the UI